420866812 has 12 divisors (see below), whose sum is σ = 745840480. Its totient is φ = 207769536.

The previous prime is 420866783. The next prime is 420866837. The reversal of 420866812 is 218668024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665613 + ... + 666244.

Almost surely, 2^420866812 is an apocalyptic number.

It is an amenable number.

420866812 is a deficient number, since it is larger than the sum of its proper divisors (324973668).

420866812 is a wasteful number, since it uses less digits than its factorization.

420866812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331940 (or 1331938 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 420866812 is about 20515.0386789789. The cubic root of 420866812 is about 749.4020787061.

The spelling of 420866812 in words is "four hundred twenty million, eight hundred sixty-six thousand, eight hundred twelve".